36results about How to "Reduce tissue" patented technology

The invention discloses a competition management system and a method based on network which includes registering through network and setting evaluating indexes; planning and organizing a competition, treating and issuing competition result, updating the evaluating indexes; carrying out integral ranking according to the evaluating indexes; the invention further includes inviting a competition and a knockout tournament through the network as well as carrying out qualification management and matching. The competition management system and the method of the invention has the advantages of breaking the restrictions of time, place, personnel, facilities and contact ways of various competitions, improving the competition involvement, reducing the organizing and managing costs of the competitions and promoting the economic and social values of the competitions.

The invention provides a precise forging-continuous rolling production technology of a large and heavy single molybdenum rod. The production technology comprises the following steps of: 1, carrying out billet forging on the molybdenum rod by a precision forging machine to obtain a precision forging bar; 2, heating the precision forging bar; 3, rolling for the first time by a Y-shaped three-roller continuous mill to obtain a rolled molybdenum rod; 4, heating the rolled molybdenum rod; and 5, rolling for the second time by the Y-shaped three-roller continuous mill and obtaining the large and heavy single molybdenum rod of which the piece weight is 45-50kg. Deep processing of a molybdenum bar is successfully achieved by setting and optimizing each parameter in precision forging, thermal treatment and continuous rolling processes; the large and heavy single molybdenum rod, which is suitable for subsequent wire drawing, and of which the piece weight is 45-50kg, is finally produced; and the production efficiency is obviously improved. The piece weight of the molybdenum rod produced by the production technology is much greater than that of the molybdenum rod produced by a traditional technology; and the precise forging-continuous rolling production technology has no welding spot on the whole, and is even in internal organization, high in product quality and suitable for large-scale industrial production.

The invention relates to the field of aluminum alloy material manufacturing, in particular to a method for producing an aluminum strip for a power battery shell through a cast-rolling method. The method comprises the specific steps that raw material matching is carried out according to alloy components; after raw materials are molten, an additive is added to adjust the components; after being molten, the raw materials are guided into a standing furnace; after being subjected to online degassing and filtering, treated molten aluminum is subjected to cast-rolling; two times of modification treatment are carried out in a launder between a degassing box and the standing furnace and a launder between a filtering box and a cast-rolling machine; a produced cast-rolled plate blank is subjected to certain rolling, then subjected to inner ring and outer ring welding and then annealed at the thickness ranging from 4.0 mm to 9.0 mm; and an aluminum coil of the finished product thickness is subjected to secondary heat treatment and then subjected to slitting machining and is slit to the target width. The method is different from traditional hot rolling method production, the cast-rolling method is adopted for production, and cost reducing and period shortening are achieved.

The invention discloses a plastic forming process of an integral top cover of a nuclear power water chamber and an intelligent forging press used by the plastic forming process. The plastic forming process comprises the following steps that: three-dimensional modeling is performed, so as to simulate a model, blanks are obtained by using large LCD (liquid crystal display) near-net forming, intelligent plastic forming is performed on the top cambered surface, and annular intelligent plastic forming is performed on the side surface of a cylinder. A vertical rack of the intelligent forging press is fixed on the ground, a movable cross beam is driven to longitudinally slide by a main working cylinder on the vertical rack, a rotary workbench can be rotatably positioned on a movable workbench of the movable cross beam around a vertical rotating shaft, a horizontal rack is driven to longitudinally move by a support cylinder on the vertical rack, a horizontal working cylinder on the horizontal rack corresponds to an intelligent auxiliary pressure head which can horizontally extend, an intelligent main pressure head can longitudinally extend and can be fixedly positioned on the vertical rack, and a sensing system is used for sensing the temperature of forgings, the pressure of the pressure heads and the metal flow information of the forgings. The integral top cover of the water chamber has the advantages of high precision, material saving, short processing cycle, high forging flexibility and low processing cost.

The invention discloses integral gear quenching equipment and a process thereof. The integral gear quenching equipment comprises a base and a gear positioning device, wherein the gear positioning device is located on the base and is used for fixing a gear, gear quenching equipment is arranged above the gear positioning device, the gear quenching equipment comprises a longitudinal adjustment fixedseat, a heating device and an oil spraying and cooling device which are arranged on the longitudinal adjustment fixed seat and are matched with a tooth groove of the gear, the heating device and the oil spraying and cooling device are connected with a gear monitoring system which is used for monitoring the gear processing state in real time by virtue of a controller, the gear is fixed to a platform on the base by the gear positioning device, and the position and the precision of the heating device and the oil spraying and cooling device are controlled by the controller according to quenching depth requirements so as to integrally quench the load surface of the gear. The gear quenching equipment has the advantages of integrality in quenching and simple method, the product quality and yieldare obviously increased, and processed gear teeth have the advantages of high strength, good wear resistance, long service life and high bearing capacity.

The invention discloses a manufacturing method of a molybdenum target tube material. The method is that molybdenum powder is used as the raw material. The method comprises the steps of preparing a molybdenum ingot; mechanically processing for the first time; extruding; thermally processing; mechanically processing for the second time to obtain the final product. The method has the advantages of being simple in process, low in production cost, high in purity of target material, high in density, low in oxygen content, large in length, uniform in structure, and small in crystal grains.

This invention relates to a contactor material of a high voltage vacuum arc-suppressing chamber in a vacuum switch, its weight percentage composition is: Mo18-22%, W3-7%, Cr3-7%, the rest is Cu. The Mo, W, Cr powder materials mixed uniformly in terms of the composition ratio are prepared by penetrating Cu with high temperature penetration method. This invented contactor material has super low oxygen content, uniform organization, good performance of arc suppression.

The invention provides a high heat resistance welding wire for dissimilar steel welding joints, which is composed of the following elements in weight percent: C: 0.08-0.20%; Si: 0.02-0.30%; Mn:0.40-1.00%; Ni:0.10-0.30%; P less than or equal to 0.0090%, S less than or equal to 0.0090%; Cr:4.50-5.50%; Mo:0.80-1.30%; V: 0.10-0.40%; Al less than or equal to 0.050%; N: 0.010-0.090%; Nb: 0.010-0.070%; and the balance of Fe. The invention further provides a preparation method for a highheat resistance welding wire and application thereof to dissimilar steel welding joints. The highheat resistance welding wire provided by the invention has good heat resistance, and can reduce contents, structure and mechanical property gradient of the dissimilar steel welding joints.

The invention provides a tungsten-nickel alloy and a preparation method thereof. The tungsten-nickel alloy comprises, by mass, 20-80% of W, 80-20% of Ni, 0-3 % of Ti, 0-4% of Al, 0-10% of Nb and 0-12%of Ta. The preparation method sequentially comprises the following steps of air atomization spraying, powder preparation, hot isostatic pressing and heat treatment. The preparation method of the tungsten-nickel alloy has the advantages that the prepared tungsten-nickel alloy is uniform in structure and short in technological process, complex shapes can be manufactured, raw materials can be saved,the tensile strength of the materials can reach 1000-2100 MPa, the yield strength is 500-1500 MPa, and the elongation rate is 15-60%. The tungsten-nickel alloy prepared by the method is suitable forthe fields such as high-energy ray shielding protection and high-speed kinetic energy weapon, and has good economic and social benefits.

The invention provides a precise forging-continuous rolling production technology of a large and heavy single molybdenum rod. The production technology comprises the following steps of: 1, carrying out billet forging on the molybdenum rod by a precision forging machine to obtain a precision forging bar; 2, heating the precision forging bar; 3, rolling for the first time by a Y-shaped three-roller continuous mill to obtain a rolled molybdenum rod; 4, heating the rolled molybdenum rod; and 5, rolling for the second time by the Y-shaped three-roller continuous mill and obtaining the large and heavy single molybdenum rod of which the piece weight is 45-50kg. Deep processing of a molybdenum bar is successfully achieved by setting and optimizing each parameter in precision forging, thermal treatment and continuous rolling processes; the large and heavy single molybdenum rod, which is suitable for subsequent wire drawing, and of which the piece weight is 45-50kg, is finally produced; and the production efficiency is obviously improved. The piece weight of the molybdenum rod produced by the production technology is much greater than that of the molybdenum rod produced by a traditional technology; and the precise forging-continuous rolling production technology has no welding spot on the whole, and is even in internal organization, high in product quality and suitable for large-scale industrial production.

The invention discloses an abrasion resistance treatment method for a sliding bearing of a centrifugal machine. The abrasion resistance treatment method comprises the steps that firstly, the sliding bearing is subjected to heating and heat preservation treatment, and then cooling is carried out; secondly, nitrogen treatment is carried out; thirdly, the sliding bearing is washed and treated through a cocoyl sodium methyl taurate solution; and fourthly, heating and heat preservation treatment are carried out. By means of the abrasion resistance treatment method for the sliding bearing of the centrifugal machine, the surface hardness and the abrasion resistance of the sliding bearing can be remarkably improved, the friction coefficient is reduced, the surface material structure and performance of an inner ring and an outer ring of the bearing are greatly improved, grains on a surface layer are refined, the impurity content of the surface layer is greatly reduced, the resistance of dislocation movement is increased, meanwhile, the plasticity and tenacity are also improved by different degrees, when the sliding bearing works in the centrifugal machine, especially after the sliding bearing works at the 117 % load for a long time, the sliding bearing can still keep a good running state, abrasion is slight, the abrasion amount is small, the service life of the sliding bearing is greatly prolonged, and the working efficiency of the centrifugal machine is improved.

The invention discloses a nickel-based target and a production process. The production process comprises working procedures of cold rolling, high-temperature vacuum heat treatment, ammonia atmosphere protective heat treatment, primary rolling, welding, precision rolling, annealing and the like. The production process has no high-temperature processes of smelting, hot rolling and the like, and also has no high-pollution processes of acid washing, alkali washing and the like. Therefore, compared with the conventional process, the production process reduces the energy consumption by 30 percent and the metal loss by 50 percent, improves the one-time yield by over 10 percent, has high comprehensive utilization rate of resources, and is environmentally-friendly; and the process is simple and convenient to operate, can effectively guarantee the purity of a electrolytic nickel thin plate, improve the comprehensive mechanical property and physical property of the electrolytic nickel thin plateand replace the prior production process for smelting and hot-rolling the nickel target, and is suitable for industrialized production.

This invention relates to a contactor material of a high voltage vacuum arc-suppressing chamber in a vacuum switch, its weight percentage composition is: Mo18-22%, W3-7%, Cr3-7%, the rest is Cu. The Mo, W, Cr powder materials mixed uniformly in terms of the composition ratio are prepared by penetrating Cu with high temperature penetration method. This invented contactor material has super low oxygen content, uniform organization, good performance of arc suppression.

The invention relates to an industrial furnace capable of realizing the thermal shift and atmospheric uniformity of a gas flow field, which comprises a furnace body, thermocouples, a feeding table, a discharge table, driving rollers and furnace doors. A preheated section on the front section of a hearth is connected with the input end of an air compression pump by an air suction pipe, a filter and a cooler; one path of the output end of the air compression pump is communicated with a group of vertical convection injection pipes arranged in a cooling area on the rear section of the hearth; andthe vertical convection injection pipes run through the furnace body to be arranged in corresponding vertical convection guiding tubes to form jet flow structures. The industrial furnace has the advantages that: the technology can solve technical difficulties in the furnace gas flowing, circulation, thermal energy shift and the like of a large furnace and reduce temperature differences by temperature control; and the thermal energy of the furnace section required to be cooled is shifted to the furnace section required to be heated according to a thermal treatment process curve, thereby greatly reducing thermal treatment energy consumption, simultaneously avoiding a great amount of heat being discharged out of the furnace, improving the cleaning production level and improving the working environment of workers.

The invention discloses a solid core wire for gas protection welding of high manganese low temperature steel. The solid core wire is characterized by comprising the following chemical composition in percentage by mass: 0.2-0.4% of C, 12-15% of Mn, 14-18% of Ni, 1.5-4.5% of Cr, 0.1-0.6% of Mo, 0.005-0.040% of Ti, no more than 0.004% of P, no more than 0.002% of S and the balance Fe and inevitable impurity elements. The solid core wire adopts the alloy design of composite manganese and nickel adding, the content of expensive elements such as nickel and the cost of alloy are reduced, the fact that the excessive amount of manganese forms excessive toxic manganese evaporation in the welding process is avoided, the use performance of the wire is improved, the weld metal formed by the solid corewire at low temperature of minus 196 DEG C has excellent impact toughness, and the welding requirements of the high manganese low temperature steel for the construction of liquefied natural gas storage tanks and other equipment are well met.